My current system components and setup:
MPPT voltage range 120v - 250v
Santan 250watt solar panel voltage range 30v - 36v
7S setup running around 150-240v and producing between 100watt to 1200watt during day hour depending on shade level. When there is partial shade on 2-3 panels, max watt is only around 200-300watt.
I want to remove watt bottleneck as much as possible by adding 5 more panels and re-arrange to a 3S2P2S topology (see illustration below, each +p- represent a panel).
By doing this, I hope when shade happen on one of those 2S branch, the other paralleled 2S will help to carry watt forward. Please let me know if you see any issues or have better ideas. I have to use my limited backyard space efficiently so shade is not avoidable.
MPPT voltage range 120v - 250v
Santan 250watt solar panel voltage range 30v - 36v
7S setup running around 150-240v and producing between 100watt to 1200watt during day hour depending on shade level. When there is partial shade on 2-3 panels, max watt is only around 200-300watt.
I want to remove watt bottleneck as much as possible by adding 5 more panels and re-arrange to a 3S2P2S topology (see illustration below, each +p- represent a panel).
Code:
+p- +p- +p- +p- +p- +p-
-----| |--| |--| |------
+p- +p- +p- +p- +p- +p-
By doing this, I hope when shade happen on one of those 2S branch, the other paralleled 2S will help to carry watt forward. Please let me know if you see any issues or have better ideas. I have to use my limited backyard space efficiently so shade is not avoidable.
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